Reaming tool



Patented Apr. l?, 1923.

'y iiN'ED STATES WI'NsLoW YERXA, or DELBURNE, aLBnnrf-i, CANADA.

BEAMING TOUL.

' lApplication tiled February 17, 1922. ISerial No. 537,257.

T all who-m t may conce/m;

Bc it known that. I, iViNsLow Ynnxa, a citizen ot Canada. and subject ot the King of England, residing at Delburne, in the Province ot Alberta, Canada, have invented certain new and useful lniprovements in Roaming Toolspof which the iollowing is a specification. y

rlfhis invention relates to new and useful improvements inreaming devices generally and is particularly directed to a novel jig device `for reaming worn axle bearings of motor vehicle steering wheels.

@ne of the principal. objects ot my invention is to provide a holder 'for a reamer which may be readily applied to the axle and centerthe reamer and maintain the latter in axial alignment with both bearings.

Another object is to provide a holder which supports `two reamers, one for use with each bearingwhereby a. single attaching operation will suiiice to center or align both reamers'andmaintain the latter inaxial alignment with both bearings. i

,ln the drawings:

Figure l is an elevation, partly iin'section.' showing the application ot my invention.

Fig. 2 is a rear elevation'ot the device; and

Fig. 3 is an elevation partly in section showing the hushed bearings and axle.

In motor vehicles, the bearings for each pivot bolt 'ofthe steering wheel knuckles become worn'and this necessitates the reaming ot the bearings and the applications of bushings. My invention relates particularly to a reaming device which may be readily applied whereby onegor both bearings may be accurately reamed prior to the application of a bushing or bushings.

Referring to the drawings, 4 indicates the usual front axle-bar ot a motor vehicle which terminates at each end in spaced upper and lower bearing arms 5 and 6 respectively, the arm 5 being formed with a bearing 7 and the arm 6 with a bearing 8, said bearings being disposed in axial alignment.

The present jig device comprises a holder or frame F formed ot metal having a body portion 9 trom the upper and lower ends of which extend lateral arms l() and il. These arms are spaced apart a distance suiiicient to embrace the bearing arms 5 and 6. Each arm is formed with a threaded opening 12 which is engaged by a threaded sleeve 13 and is also cut or slit as indicated at-. and

tapped to receive a clamping screw y so that when the sleeve becomes worn the screw can be tightened to prevent the sleeve from getting out ot' line, ln each sleeve there is journaled a shank le of a reamer l5, the reamers .being disposed between the arms lO and l1 for engagements with the outer portions ot the bearings. s will be observed irom Figures l and 2 the threaded sleeves i3 bear against the rear tace ot the reamer head l5 thereby to hold the head of the reamer to its work. F or the purpose oi. `l'acilitating the adjustment oifthe sleeves 15% initially; the extending shank portions thereof' are provided with knnrled linger gripping flanges 13, It will ot coiirsebe understood that the threads ot the sleeves 13 are of lett hand pitch so that they willv not turn to the right when the reamer operating.

Integral y with and extending laterally from the body portion 9 of said holder, are spaced upper and lower arms 1G and 1T which are adapted to be positioned between the bearing arms 5 and G. Each ot the arms i6 and 17 is formed with an opening i8 and lwith a counterbore or recess i9, said recesses opening towards the bearing arms. The openings i8 are disposed in axiall alignment with the Shanks l-t ot the reaniers. Slidably mounted in each opening i8 is a centering bolt 9,0 having a threaded shank 2l and a centering head 22,' the heads being normally positioned in said recesses 19, and the Shanks extending inwardly. The threads of the shan rs are oppositely pitched and are connected by a turnbuckle 2B. In order to prevent. the head 22 jfrom rotating in the bore 18V when the turn buckle 23 ismanipulating7 the side wall of the head 2Q is preterably provided with a groove 22 which receives the end ot the locking screw'QQ). Also. due to the relative Adepth otthe head1@ it has a more or less extended bearing engagement in the bore 1 8 thereby preventing the same trom canting or twisting when manipulated by the turn buckle,

The holder is positioned relative to the bearing` arms of' the axle so to position the reamers directly above and below the hearings, and the turnbuckle is then operated to simultaneously move the centering bolts outwardly to engage the bearings and center the reamers relative to the bearings. Thus the centering bolts clamp the holder to the axle bar and maintain both reamers in axial alignment with both ot said bearings.

After both bearings havebeen reamed,

tapered bushing 24 and tapered nut 24 are positioned in the seats formed by the reamers, and the knuckle 25 and pivot bolt 2G are then readily assembled. It will ol'- course be understood that the bushing 24 has a loose fit on the shank of the bolt 2G while the nut 24a engages threads 24 thereon.

What I claim is: 1. A jig for reaming the bearings of axle bars comprising a holder, a reamer carrier adjustably mounted in said holder, a reamer rotatable in said carrier, and extensible means for simultaneously engaging both bearings to maintain the reamer in axial alignment therewith.

Q. A for reaming the bearings ot' axle bars comprising a holder, a reamer adjustably mounted on said holder, a pair of centering bolts carried by the holder and disposed in axial alignment withl said bearings, and means for moving said. bolts in opposite directions to engage the inner sides of said bearings and vmaintain the reamer in axial alignment therewith.

3. A jig for roaming the bearings of axle bars comprising a holder, a reamer mounted on saidholder, a lpair of centering bolts slidably mounted on said holder and disposed in axial alignment with said bearings, and a turnbuckle engageable with said bolts to simultaneously move said bolts in opposite directions to engage the bearings and maintain said reamer in axial alignment with buckle engageable with said Shanks to simultaneously move the bolts in opposite directions and thereby engage the centering heads thereof with said bearings whereby said reamer will be maintained in axial alignment with said bearings.

5. A jig for reaming the bearings of axle bars comprising a holder having an arm extending laterally above the upper bearing and a pair of spaced arms extending laterally between said bearings, a reamer journaled in the upper arm of the holder, centering bolts movably mounted in said spaced arms of the holder, and means for moving said centering bolts to engage said bearings to align and maintain said reamer in axial alignment with said bearings.

6. A jig for reaming the bearings of axle bars comprising a holder having an arm extending laterally above the upper bearing and a pair of spaced arms extending laterally between said bearings, a reamer journaled in the upper arm of the holder, centering bolts slidably mounted in said spaced arms of the holder, said bolts being each formed with a centering head and a threaded shank, and a turnbucklev engageable with said Shanks to simultaneouslymove the bolts and thereby engage the centering heads thereof with said bearings whereby said reamer will be maintained in axial alignment with said bearings; Y j

7. A jig for Ireaming the bearings of axle bars ,comprising a holder, spaced reamers -for the respective bearings mounted on said holder and disposed in longitudinal alignment, and means carried by the holder and engageable with said bearings to center and maintain said reamers in axial alignment with said bearings.

8. A jig for reaming the bearings of axle bars, and a reaming device for said bear-ings comprising aholder having spaced upper and lower laterally extending arms respectively disposed above and below said bearing arms, reamers respectively mounted in signature in the presence of two witnesses.

WINS'LOW YERXA. Witnesses H. E. MAcDoNALD, H. L. Frr'rs. 

